Support replacing "-SNAPSHOT" with a given version suffix

I use version properties for various reasons, but I want to publish a pom.xml without it being a SNAPSHOT, without having to manipulate the XML file myself (e.g. using sed), and without having to do string manipulation in a script based on the current project version.

For detail about my use case, see: http://maven.40175.n5.nabble.com/Continuous-Delivery-and-Maven-tp3245370p3406688.html

I'd like to be able to do something like this:
mvn versions:replace-snapshot -DnewSuffix=.123

And have it replace 3.1-SNAPSHOT with 3.1.123 very similar to versions:set.